Examines the current and future role of biotechnology in food production. Genetic engineers like Dr. Ed Dart, research director of ICI's huge seeds business, and Roger Salquist of the California biotechnology firm Calgene, claim that food shortages in the developing world could be overcome by transferring genes from plants which can survive drought into crops which can be grown in drought-stricken countries. Others claim that biotechnology is liable to take business away from developing countries by transferring genes from Third World plants to northern crops. At Calgene, for example, scientists are fitting genes from tropical oils into oil seed rape which will eventually be grown in the USA and Europe. Prof. John Lawton from Imperial College warns of the dangers inherent in releasing some genetically-engineered organisms, such as those designed to help plants fix nitrogen into the environment.